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## Symptoms

The following appears in the atlassian-confluence.log during the upgrade of Confluence 5.2.3:

ERROR [main] [atlassian.confluence.plugin.PluginLoadersFactory] get Unable to load extra plugins from specified in -Dconfluence.plugins.extra.bundled.locations. file not found or unreadable

## Cause

This problem happens, because you don't have set the following string in your JAVA_OPTS.

This message is harmless your upgrade will be done, regardless of this message, the resolution is optional.

## Resolution

1. Shutdown Confluence
2. Go to the <install-folder-of-Confluence>/bin and open the setenv.bat for Windows or setenv.sh for Linux
3. Add the following line to the JAVA_OPTS line:
-Dconfluence.plugins.extra.bundled.locations

4. Start Confluence.